According to NBC, smoke from the fire continues to smother the Bay Area, blanketing cities and prompting public school closures. Health officials are encouraging netizens to stay indoors and to wear a N95 mask when going outside.

According to air quality monitoring network Purple Air, Northern California’s air quality is currently the worst in the world.

Areas across the Bay are scoring “very unhealthy” with Air Quality Index values of 220 and up, even beating out cities like New Dehli, India. An AQI reading of 35-70 is considered already high enough to encourage people to stay indoors, NBC stated.